CVE-2022-48784 (GCVE-0-2022-48784)

Vulnerability from cvelistv5 – Published: 2024-07-16 11:13 – Updated: 2025-05-04 12:43
VLAI?
Title
cfg80211: fix race in netlink owner interface destruction
Summary
In the Linux kernel, the following vulnerability has been resolved: cfg80211: fix race in netlink owner interface destruction My previous fix here to fix the deadlock left a race where the exact same deadlock (see the original commit referenced below) can still happen if cfg80211_destroy_ifaces() already runs while nl80211_netlink_notify() is still marking some interfaces as nl_owner_dead. The race happens because we have two loops here - first we dev_close() all the netdevs, and then we destroy them. If we also have two netdevs (first one need only be a wdev though) then we can find one during the first iteration, close it, and go to the second iteration -- but then find two, and try to destroy also the one we didn't close yet. Fix this by only iterating once.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ea6b2098dd02789f68770fd3d5a373732207be2f , < 241e633cb379c4f332fc1baf2abec95ec840cbeb (git)
Affected: ea6b2098dd02789f68770fd3d5a373732207be2f , < c979f792a2baf6d0f3419587668a1a6eba46a3d2 (git)
Affected: ea6b2098dd02789f68770fd3d5a373732207be2f , < f0a6fd1527067da537e9c48390237488719948ed (git)
Affected: 2e4f97122f3a9df870dfe9671994136448890768 (git)
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    Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.15.25 , ≤ 5.15.* (semver)
Unaffected: 5.16.11 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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